Formal Division

1. Formal Division • 1 2 6 How can we teach this for understanding? How important is it to teach for understanding?

2. H T U 5 1 2 6 Here’s the number represented with place value counters. The divisor is 5, so we are trying to find out how many groups of 5 there are in 126. We must remember, we can only work with hundred counters in the hundreds column, tens counters in the tens column, and so on.

3. H T U 5 1 2 6 How many groups of 5 can we make in the hundreds column? We can’t make any, so we will exchange the hundred counter for 10 tens counters.

4. H T U 5 1 2 6 1 How many groups of 5 can we make in the tens column?

5. H T U 2 5 1 2 6 We can make 2 groups of 5, with 2 left over. We’ll now exchange the 2 extra tens counters for 20 ones counters

6. H T U 2 5 1 2 6 2 How many groups of 5 can we make in the units column?

7. H T U 2 5 r1 5 1 2 6 We can make 5 groups of 5, with 1 remaining.